Buggy code:
public final class JOhmUtils { static String getReferenceKeyName ( final Field field ) { } public static Long getId ( final Object model ) { } public static Long getId ( final Object model , boolean checkValidity ) { } static boolean isNew ( final Object model ) { } @ SuppressWarnings ( "unchecked" ) static void initCollections ( final Object model , final Nest < ? > nest ) { } static void loadId ( final Object model , final Long id ) { } static boolean detectJOhmCollection ( final Field field ) { } public static JOhmUtils . JOhmCollectionDataType detectJOhmCollectionDataType ( final Class < ? > dataClazz ) { } @ SuppressWarnings ( "unchecked" ) public static boolean isNullOrEmpty ( final Object obj ) { } static List < Field > gatherAllFields ( Class < ? > clazz ) { } public static enum JOhmCollectionDataType { PRIMITIVE , MODEL ; } public static final class Convertor { static Object convert ( final Field field , final String value ) { } public static Object convert ( final Class < ? > type , final String value ) { if ( ( type . equals ( Byte . class ) ) || ( type . equals ( byte . class ) ) ) { return new Byte ( value ) ; } if ( ( type . equals ( Character . class ) ) || ( type . equals ( char . class ) ) ) { if ( ! ( JOhmUtils . isNullOrEmpty ( value ) ) ) { if ( ( value . length ( ) ) > 1 ) { throw new IllegalArgumentException ( "Non-character<seq2seq4repair_space>value<seq2seq4repair_space>masquerading<seq2seq4repair_space>as<seq2seq4repair_space>characters<seq2seq4repair_space>in<seq2seq4repair_space>a<seq2seq4repair_space>string" ) ; } return value . charAt ( 0 ) ; } else { return '' ; } } if ( ( type . equals ( Short . class ) ) || ( type . equals ( short . class ) ) ) { return new Short ( value ) ; } if ( ( type . equals ( Integer . class ) ) || ( type . equals ( int . class ) ) ) { if ( value == null ) { return 0 ; } return new Integer ( value ) ; } if ( ( type . equals ( Float . class ) ) || ( type . equals ( float . class ) ) ) { if ( value == null ) { return 0.0F ; } return new Float ( value ) ; } if ( ( type . equals ( Double . class ) ) || ( type . equals ( double . class ) ) ) { return new Double ( value ) ; } if ( ( type . equals ( Long . class ) ) || ( type . equals ( long . class ) ) ) { return new Long ( value ) ; } if ( ( type . equals ( Boolean . class ) ) || ( type . equals ( boolean . class ) ) ) { return new Boolean ( value ) ; } if ( type . equals ( BigDecimal . class ) ) { return new BigDecimal ( value ) ; } if ( type . equals ( BigInteger . class ) ) { return new BigInteger ( value ) ; } if ( ( type . isEnum ( ) ) || ( type . equals ( Enum . class ) ) ) { <START_BUG> return Enum . valueOf ( ( ( Class < Enum > ) ( type ) ) , value ) ; <END_BUG> } if ( type . equals ( Collection . class ) ) { return null ; } if ( type . isArray ( ) ) { return null ; } return value ; } } static final class Validator { static void checkValidAttribute ( final Field field ) { } static void checkValidReference ( final Field field ) { } static Long checkValidId ( final Object model ) { } static void checkValidIdType ( final Field field ) { } static boolean isIndexable ( final String attributeName ) { } static void checkValidModel ( final Object model ) { } static void checkValidModelClazz ( final Class < ? > modelClazz ) { } static void checkValidCollection ( final Field field ) { } static void checkValidCollectionList ( final Field field ) { } static void checkValidCollectionSet ( final Field field ) { } static void checkValidCollectionSortedSet ( final Field field ) { } static void checkValidCollectionMap ( final Field field ) { } static void checkValidArrayBounds ( final Field field , int actualLength ) { } static void checkAttributeReferenceIndexRules ( final Field field ) { } public static boolean checkSupportedPrimitiveClazz ( final Class < ? > primitiveClazz ) { } } private static final Set < Class < ? > > JOHM_SUPPORTED_PRIMITIVES = new HashSet < Class < ? > > ( ) ; private static final Set < Class < ? > > JOHM_SUPPORTED_ANNOTATIONS = new HashSet < Class < ? > > ( ) ; }

Fix:
return value == null ? null : Enum . valueOf ( ( ( Class < Enum > ) ( type ) ) , value ) ;